Study on compressive components of soil mixed with deformable particles and its modeling

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K06298
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 41030:Rural environmental engineering and planning-related
• Research Institution: Osaka Metropolitan University (2022); Osaka Prefecture University (2019-2021)
• Principal Investigator: Kimata Takashi 大阪公立大学, 大学院農学研究科, 准教授 (60254439)
• Co-Investigator(Kenkyū-buntansha): 小林 範之 愛媛大学, 農学研究科, 教授 (00314972)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 変形性粒子 / 混合土 / 圧縮成分 / モデル化

Outline of Final Research Achievements

In order to effective use of waste tire chips, we have conducted a study to model the increase in the amount of compression that becomes a problem in case the deformable material is mixed with soil. Specifically, we carried out a series of compression tests of the rod-stack model using rubber and aluminum stick, and examined a method to classify the overall compression amount according to the mechanism and predict them individually. As a result, we proposed a method to calculate each of the three compression components caused by the deformation of the rubber, and successfully predicted the compression behavior of the overall rod-stack model.

Free Research Field

農業農村工学

Academic Significance and Societal Importance of the Research Achievements

本研究では変形しやすい粒子を含んだ混合土の圧縮特性の解明を目指している。従来の地盤工学ではあまり扱われてこなかった分野であり、学術的に意義のある研究である。この研究成果は、廃タイヤなどの使用済み材料をチップ化して混合土としてリサイクルする際に、どの程度の沈下や変形が起こるのかを予測するのに不可欠な理論となる。したがって、循環型社会の構築に役立つ研究の一つとして、社会的な意義も高いと考えている。